10.3969/j.issn.1002-7572.2008.07.014
新题征展(97)
@@ A 题组新编
1.(侯雪花)若a,b是正数,且a+b=1.
(1)求证:(a+1/a-1)(b+1/b-1)≥9/4;
(2)求证:(a+1/a-1)2+(b+1/b-1)2≥9/2;
(3)求证:(a+1/a-2)(b+1/b-2)≤1/4;
(4)求证:(a+1/a-2)2+(b+1/b-2)2≥1/2.
雪花
TS9;TS2
2008-09-01(万方平台首次上网日期,不代表论文的发表时间)
共4页
34-37